Clicking the wrong button on the OpenOfficeMouse (OOMouse) is inevitable, due to its 18-button layout. Its creator says "16 buttons divided into two 8-button halves were the maximum number of buttons that could be efficiently used by feel alone." Pricing and availability have not yet been announced.

They've set up profiles to make the OOMouse work with WoW, 3D Studio Max, Firefox, and many others - including, of course, the whole OpenOffice suite.